CN220964440U - Motor winding protective structure, stator and motor - Google Patents

Abstract

The utility model belongs to the technical field of motors, and particularly relates to a motor winding protection structure, a stator and a motor. A motor winding protection structure comprises a framework and a wash-resistant plate; the framework is internally provided with a mounting hole for connecting with the stator core, and a binding post and a winding connecting piece are arranged in the framework; the winding connecting piece is used for winding an enameled wire to form a winding, and the binding post is used for being connected with an outgoing line in the winding; the impact plate is arranged on the end face of the framework and is used for covering the end face of the winding; and the impact-resistant plate is provided with a column sleeve which is used for covering the connection point of the outgoing line and the binding post. The motor winding protection structure provided by the utility model can prevent plastic package materials from impacting the welding spots of the enameled wires and prevent the plastic package materials from impacting the winding when in use.

Description

Motor winding protective structure, stator and motor

Technical Field

The utility model belongs to the technical field of motors, and particularly relates to a motor winding protection structure, a stator and a motor.

Background

The plastic package motor has the characteristics of high production efficiency, high stator precision, high insulation protection grade and the like due to the characteristics of integral injection molding and complete stator wrapping.

However, the plastic package motor has the characteristic of injection molding, so that the injection molded stator is subjected to injection molding impact and injection molding stress release impact during injection molding, and the winding breakage and breakdown reject ratio are greatly increased, so that the technical problem is solved. Wherein, the cross-phase lead wire of the inner winding of the injection-molded stator is most affected and is most easily broken.

Disclosure of utility model

The utility model aims to provide a motor winding protection structure, a stator and a motor, aiming at the problems that an injection molding stator is easy to receive injection molding impact and injection molding stress release impact during injection molding, so that winding breakage and breakdown reject ratio are greatly increased.

In one aspect, the utility model provides a motor winding protection structure, which comprises a framework and a shock-proof plate; the framework is internally provided with a mounting hole for connecting with the stator core, and a binding post and a winding connecting piece are arranged in the framework;

the winding connecting piece is used for winding an enameled wire to form a winding, and the binding post is used for being connected with an outgoing line in the winding;

The impact plate is arranged on the end face of the framework and is used for covering the end face of the winding; and the impact-resistant plate is provided with a column sleeve which is used for covering the connection point of the outgoing line and the binding post.

Further, the bottom of the column sleeve is provided with an opening, the caliber of the opening at the bottom of the column sleeve is larger than the diameter of the binding post, and the aperture at the top of the column sleeve is smaller than the diameter of the binding post.

Further, a side column is arranged in the framework and is used for wiring of a bridge wire in the winding; and an avoidance hole for avoiding the side column is also formed in the impact plate.

Further, the impact-resistant plate and the framework are both processed by insulating materials.

Further, the framework is formed by connecting a plurality of framework units, and each framework unit comprises a side column, a binding post and a winding connecting piece;

The impact plate comprises a plurality of impact plate units, the impact plate units are in one-to-one correspondence with the skeleton units, and each impact plate unit is detachably connected with the corresponding skeleton unit.

Further, each skeleton unit comprises a first connecting frame and a second connecting frame, the first connecting frame is connected with the second connecting frame through a winding connecting piece, and a winding area of the enameled wire is formed between the first connecting frame, the second connecting frame and the winding connecting piece.

Further, the inner side surface of the first connecting frame, the inner side surface of the second connecting frame and the inner side surface of the impact plate unit are all arc surfaces, the arc inner diameter of the inner side surface of the impact plate unit is larger than the radius of the inner arc surface of the first connecting frame, and the arc inner diameter of the inner side surface of the impact plate unit is smaller than the radius of the inner arc surface of the second connecting frame.

Further, the second connecting frame is arranged at the outer side of the first connecting frame, and a positioning hole is formed in the inner side surface of the first connecting frame; when in use, the stator core is fixed on the framework unit through the positioning hole.

Furthermore, each framework unit further comprises a framework baffle, and a lock hole is formed in the end face of the framework baffle; the anti-impact plate unit is fixedly provided with a locking component which is matched with the lock hole, and the anti-impact plate unit is arranged on the end face of the framework unit in a mode of connecting the locking component with the lock hole;

And when the locking assembly is arranged at the bottom of the lock hole, the column sleeve on the impact-resistant plate unit is exactly sleeved on the binding post in the framework unit.

Further, the side posts and the binding posts are positioned on the inner side of the framework baffle; the lock hole on the framework baffle comprises a clamping hole and a notch, the clamping hole is formed in the end face of the framework baffle, the notch is formed in the inner side wall of the framework baffle, and the notch is communicated with the clamping hole;

The locking assembly comprises a transition bridge and a linkage rod, and the linkage rod is connected with the impact-resistant plate unit through the transition bridge; wherein, the clamping hole is in clearance fit with the linkage rod, and the depth of the clamping hole is larger than the diameter of the linkage rod; the depth of the notch is the same as that of the clamping hole, and the width of the notch is in clearance fit with the transition bridge.

Further, a clamping inner hole is formed in the clamping hole along the outer side direction of the clamping hole; the clamping inner hole is in clearance fit with the linkage rod, and the length of the transition bridge is greater than twice the diameter of the linkage rod.

On the other hand, the utility model provides a stator, which comprises a stator core, a winding and the motor winding protection structure;

The stator core is arranged in a mounting hole of a framework in the motor winding protection structure, the winding is wound on the framework in the motor winding protection structure, the impact-resistant plate in the motor winding protection structure can cover the end face of the winding, and the column sleeve on the impact-resistant plate can cover the connection point of the outgoing line in the winding and the binding post in the framework.

In still another aspect, the present utility model also provides an electric machine, including the stator described above.

The beneficial effects of the utility model are as follows:

The utility model provides a motor winding protection structure. During injection molding, the impact-proof plate in the motor winding protection structure can entirely cover the end face of the winding, so that impact of plastic package materials on the winding can be effectively prevented through the impact-proof plate; meanwhile, the column sleeve on the impact-resistant plate can cover the connection point of the wiring terminal and the outgoing line, so that the plastic package material can be effectively prevented from impacting the connection point of the outgoing line and the wiring terminal.

Therefore, the motor winding protection structure provided by the utility model can prevent plastic package materials from impacting the welding spots of the enameled wires and prevent the plastic package materials from impacting the winding when in use.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1.

Fig. 2 is a schematic view of a state in which the impact plate unit is mounted on the backbone unit.

Fig. 3 is a schematic structural diagram of a skeleton unit.

Fig. 4 is a schematic structural view of the impact plate unit.

Fig. 5 is a schematic three-dimensional structure of the impact plate unit.

Fig. 6 is a schematic structural view of the clamping hole.

Reference numerals: 1-skeleton unit, 10-mounting hole, 11-terminal, 12-side post, 13-wire winding connecting piece, 14-first link, 141-locating hole, 15-second link, 16-skeleton baffle, 161-lockhole, 162-joint hole, 163-notch, 164-joint hole, 2-wash-proof plate unit, 21-column sleeve, 22-dodge hole, 23-locking assembly, 231-transition bridge, 232-link rod, 3-winding, 4-stator core.

Detailed Description

The present utility model will be described in further detail with reference to test examples and specific embodiments. It should not be construed that the scope of the above subject matter of the present utility model is limited to the following embodiments, and all techniques realized based on the present utility model are within the scope of the present utility model.

Example 1

Aiming at the problems that an injection molding stator is easy to receive injection molding impact and injection molding stress release impact during injection molding, so that winding breakage and breakdown reject ratio are greatly increased, the embodiment 1 provides a motor winding protection structure, which can prevent plastic package materials from impacting enameled wire welding spots and prevent the plastic package materials from impacting windings during use.

As shown in fig. 1 to 6, the motor winding protection structure provided in embodiment 1 includes a bobbin and a shock-proof plate.

In embodiment 1, a mounting hole 10 for connecting to the stator core 4 is provided in the frame. Preferably, as shown in fig. 1, the skeleton in embodiment 1 may be a circular ring structure, and the inner hole in the skeleton is the mounting hole 10.

As shown in fig. 2 and 3, a winding connector 13 is provided in the bobbin, and a post 11 and a side post 12 are provided on the end face of the bobbin. When in use, the stator core 4 is connected with the mounting hole 10 of the framework, and then the enameled wire is wound on the winding connecting piece 13 to form the winding 3; then, the bridge wire in the winding 3 is routed through the side post 12, and the post 11 is connected to the lead wire in the winding 3.

The impact plate in this embodiment 1 is mounted on the end face of the bobbin, and is used to cover the end face of the winding 3 wound around the bobbin. Meanwhile, as shown in fig. 4 and 5, the impact plate in the present embodiment 1 is provided with a post 21, and the post 21 is fitted over the post 11 and serves to cover the connection point of the lead wire and the post 11.

During injection molding, the impact-proof plate covers the whole end face of the winding 3, so that impact of plastic package materials on the winding 3 can be effectively prevented through the impact-proof plate; meanwhile, the column sleeve 21 on the impact-resistant plate can cover the connection point of the wiring terminal 11 and the outgoing line, so that the plastic package material can be effectively prevented from impacting the connection point of the outgoing line and the wiring terminal 11.

Preferably, the post sleeve 21 in the impact-resistant plate is in a structure with a wide bottom and a narrow top, namely, the diameter of the bottom of the post sleeve 21 is larger than the diameter of the binding post 11, and the diameter of the upper part of the post sleeve is smaller than the diameter of the binding post 11 of the framework, so that the lead wire is not broken and the connection point of the lead wire and the binding post 11 is not broken when the impact-resistant plate is sleeved with the binding post 11; meanwhile, the column sleeve 21 in the impact plate is of a structure with a wide bottom and a narrow top, the column sleeve 21 can be conveniently sleeved on the binding post 11, the column sleeve 21 can be conveniently used for tightly covering the connection point of the outgoing line and the binding post 11, and further the enamelled wire welding point and the enamelled wire lead impact can be conveniently and effectively avoided.

Furthermore, an avoidance hole 22 is further formed in the impact plate, and the avoidance hole 22 is used for avoiding the side column 12 when the impact plate is installed on the end face of the framework. That is, in the present embodiment 1, the escape holes 22 are mainly used for the escape side posts 12. The side post 12 is not required to be wound with the enameled wire, and the side post 12 is only used for wiring the enameled wire. Preferably, the relief holes 22 are of equal diameter to the jambs 12. In embodiment 1, the escape hole 22 may be circular or may be another shape. So long as the relief holes 22 are adapted to the shape of the jamb 12.

It should be understood that the insulating material is selected as the material of the impact plate and the material of the skeleton in this embodiment 1.

As shown in fig. 1 to 5, the skeleton in embodiment 1 is formed by connecting a plurality of skeleton units 1, and each skeleton unit 1 includes a side post 12, a binding post 11, and a winding connection member 13. Accordingly, the impact plate also comprises a plurality of impact plate units 2, and the impact plate units 2 are in one-to-one correspondence with the framework units 1. Preferably, each impact-resistant plate unit 2 is detachably connected to the corresponding skeleton unit 1.

Specifically, each backbone unit 1 includes a first connection frame 14 and a second connection frame 15, and the first connection frame 14 and the second connection frame 15 are connected through a wire winding connection 13, thereby forming a winding area of the enamel wire between the first connection frame 14, the second connection frame 15 and the wire winding connection 13.

It should be understood that at least one of the inner sides of the first and second connection frames 14 and 15 should be an arc surface. Preferably, the inner side surfaces of the first and second connection frames 14 and 15 in embodiment 1 are arc surfaces. In this embodiment 1, the second connection frame 15 may be disposed outside the first connection frame 14, so that after all the frame units 1 in this embodiment 1 are connected, the inner side surfaces of all the first connection frames 14 constitute the mounting holes 10 inside the frame.

Preferably, the inner side surface of the impact plate unit 2 is also preferably an arc surface, and the arc inner diameter of the inner side surface of the impact plate unit 2 may be made larger than the radius of the inner arc surface of the first connecting frame 14, and the arc inner diameter of the inner side surface of the impact plate unit 2 may be made smaller than the radius of the inner arc surface of the second connecting frame 15.

Further, in embodiment 1, the positioning hole 141 of the stator core 4 is formed in the inner surface of the first connecting frame 14. In use, the stator core 4 is fixed to the backbone unit 1 through the positioning hole 141.

In each of the backbone units 1, the jambs 12 and the posts 11 are provided on the end face of the second connecting frame 15. As shown in fig. 2 and 3, two side posts 12 and two binding posts 11 are provided on the end face of each second structural frame. Wherein, two terminal 11 interval sets up between two jambs 12.

In this embodiment 1, the impact plate units 2 may be clamped in the corresponding skeleton units 1.

Specifically, as shown in fig. 3 to 6, each skeleton unit 1 further includes a skeleton guard 16, and a lock hole 161 is formed on an end surface of the skeleton guard 16; the impact-resistant plate unit 2 is fixedly provided with a locking component 23 which is matched with the lock hole 161, and the impact-resistant plate unit 2 is arranged on the end face of the framework unit 1 in a mode that the locking component 23 is connected with the lock hole 161. When the locking assembly 23 is placed at the bottom of the locking hole 161 at the time of installation, the post 21 on the impact plate unit 2 should be exactly fitted on the post 11.

Further, the side post 12 and the binding post 11 are located at the inner side of the frame baffle 16, and the lock hole 161 on the frame baffle 16 includes a clamping hole 162 and a notch 163, the clamping hole 162 is formed on the end face of the frame baffle 16, the notch 163 is formed on the inner side wall of the frame baffle 16, and the notch 163 is communicated with the clamping hole 162. The lock assembly 23 includes a transition bridge 231 and a link 232, and the link 232 is connected to the impact plate unit 2 through the transition bridge 231. Wherein, the clamping hole 162 is in clearance fit with the linkage rod 232, and the depth of the clamping hole 162 is larger than the diameter of the linkage rod 232; the depth of the notch 163 is the same as the depth of the snap hole 162, and the width of the notch 163 is in clearance fit with the transition bridge 231.

During installation, the linking rod 232 can be quickly placed in the clamping hole 162 through clearance fit between the clamping hole 162 and the linking rod 232, and the transition bridge 231 is rotated in the clamping hole 162 so as to be convenient for rotating the transition bridge 231 into the notch 163. Through the clearance fit between the notch 163 and the transition bridge 231, the linking rod 232 slides to the bottom of the clamping hole 162, so that the post sleeve 21 is sleeved on the binding post 11. In addition, the post sleeve 21 has a structure with a wide bottom and a narrow top, so that the post sleeve 21 can be accurately and rapidly sleeved on the binding post 11.

Preferably, the cross-sectional shapes of the clamping hole 162 and the notch 163 may be rectangular; both the link 232 and the bridge 231 may be cylindrical rods.

In embodiment 1, the clearance fit between the locking hole 162 and the linking rod 232 means that the size of the locking hole 162 is slightly larger than the size of the linking rod 232, so that the linking rod 232 can move in the locking hole 162 conveniently without affecting the quick fit between the post sleeve 21 and the binding post 11. Similarly, the clearance fit between the notch 163 and the transition bridge 231 means that the size of the notch 163 is slightly larger than the size of the link 232, so that the link 232 can move in the notch 163 conveniently, and the quick fit between the post sleeve 21 and the post 11 is not affected.

Further, in the clamping hole 162, a clamping inner hole 164 is formed along the outer direction of the clamping hole 162. The clamping inner hole 164 is in clearance fit with the linkage rod 232, and the length of the transition bridge 231 is greater than twice the diameter of the linkage rod 232, so that the locking assembly 23 cannot interfere with the frame baffle 16 when the impact plate unit 2 is turned over.

It should be understood that the clearance fit between the clamping inner hole 164 and the linkage rod 232 means that the size of the clamping inner hole 164 is slightly larger than the size of the linkage rod 232, so that the linkage rod 232 can move in the clamping inner hole 164 conveniently. In the clamping hole 162, the clamping inner hole 164 is formed along the outer direction of the clamping hole 162, that is, the clamping inner hole 164 is located in the clamping hole 162, and the clamping inner hole 164 is formed along the inner opening of the frame baffle 16.

Specifically, the length of the clamping bore 164 may be the same as the length of the clamping bore 162, which may be slightly greater than the length of the linkage 232. The width of the clamping bore 164 may be the same as the width of the clamping bore 162, which may be slightly greater than the width of the lever 232. The depth of the snap-in bore 164 may be slightly greater than the diameter of the trace 232; the depth of the snap hole 162 and the depth of the notch 163 may be the same, which may be slightly greater than twice the diameter of the lever 232. The width of the notch 163 may be slightly larger than the diameter of the transition bridge 231.

Thus, when the impact-resistant plate unit 2 is mounted on the framework unit 1, the impact-resistant plate unit can move along the depth direction of the clamping hole 162 before the linkage rod 232 is not pushed into the clamping inner hole 164; after the link 232 is pushed into the engagement hole 164, the guard plate unit can be prevented from moving in the depth direction of the engagement hole 162 by the engagement hole 164.

Further, after the impact plate unit 2 is mounted on the skeleton unit 1, the axial direction of the transition bridge 231 is arranged along the radial direction of the skeleton mounting hole 10, so as to realize the concentric design of the skeleton and the impact plate.

Example 2

Aiming at the problems that an injection molding stator is easy to receive injection molding impact and injection molding stress release impact during injection molding, so that winding breakage and breakdown reject ratio are greatly increased, embodiment 2 provides a stator, which can prevent plastic package materials from impacting enameled wire welding spots and prevent the plastic package materials from impacting windings during manufacturing.

The stator provided in this embodiment 2 includes the stator core 4, the windings 3, and the motor winding protection structure provided in embodiment 1.

Wherein, stator core 4 sets up in the mounting hole 10 of skeleton in this motor winding protective structure, and winding 3 winds and establishes on the skeleton in motor winding protective structure, and the terminal surface of winding 3 can be covered to the scour protection board in the motor winding protective structure to and the tie point of terminal 11 in the post cover 21 covers the winding 3 in lead-out wire and the skeleton, thereby when moulding plastics, can prevent that the plastic envelope material from striking enameled wire solder joint, and can prevent the impact of plastic envelope material to winding 3.

In order to further understand the present embodiment, the following provides a method for manufacturing a stator, which is used for manufacturing the stator provided in embodiment 2, and specifically includes the following steps:

S1, all the frame units 1 are assembled on the stator core 4.

S2, winding enameled wires on each framework unit 1 to form windings 3, enabling bridge wires in the windings 3 to conduct line arrangement through side posts 12 in the framework units 1, and conducting soldering on binding posts 11 in the framework units 1 and outgoing lines in the windings 3.

S3, installing a wash-resistant plate unit 2 on each framework unit 1, and completing the pre-assembly of the stator.

The step S3 specifically comprises the following steps:

Firstly, the linkage rod 232 in the impact-resistant plate unit 2 is placed in the clamping hole 162 of the corresponding framework unit 1;

Then, the impact plate unit 2 is rotated in the clamping hole 162, and the transition bridge 231 in the impact plate unit 2 is placed in the notch 163 of the skeleton unit 1;

Then, the linkage rod 232 is slid to the bottom of the clamping hole 162 by utilizing clearance fit of the transition bridge 231 and the notch 163, and the column sleeve 21 in the impact-resistant plate unit 2 is sleeved on the binding post 11 of the framework unit 1;

finally, the linkage rod 232 is pushed into the clamping inner hole 164 of the framework unit 1.

And S4, performing injection molding on the stator after the preassembly is completed.

Example 3

Aiming at the problems that an injection molding stator is easy to receive injection molding impact and injection molding stress release impact during injection molding, so that winding breakage and breakdown reject ratio are greatly increased, embodiment 3 provides a motor, which can prevent plastic package materials from impacting enameled wire welding spots and prevent the plastic package materials from impacting the winding during manufacturing.

The plastic package motor provided in this embodiment 3 includes the stator provided in embodiment 2.

The foregoing description of the preferred embodiment of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (13)

1. A motor winding protective structure is characterized in that: comprises a framework and a wash-resistant plate; the framework is internally provided with a mounting hole for connecting with the stator core, and a binding post and a winding connecting piece are arranged in the framework;

the winding connecting piece is used for winding an enameled wire to form a winding, and the binding post is used for being connected with an outgoing line in the winding;

The impact plate is arranged on the end face of the framework and is used for covering the end face of the winding; and the impact-resistant plate is provided with a column sleeve which is used for covering the connection point of the outgoing line and the binding post.

2. The motor winding protection structure according to claim 1, wherein: the bottom of the column sleeve is provided with an opening, the caliber of the opening at the bottom of the column sleeve is larger than the diameter of the binding post, and the aperture at the top of the column sleeve is smaller than the diameter of the binding post.

3. The motor winding protection structure according to claim 1, wherein: a side column is also arranged in the framework and is used for wiring of bridge wires in the windings; and an avoidance hole for avoiding the side column is also formed in the impact plate.

4. The motor winding protection structure according to claim 1, wherein: the impact-resistant plate and the framework are both made of insulating materials.

5. The motor winding guard structure according to any one of claims 1 to 4, wherein: the framework is formed by connecting a plurality of framework units, and each framework unit comprises a side column, a binding post and a winding connecting piece;

The impact plate comprises a plurality of impact plate units, the impact plate units are in one-to-one correspondence with the skeleton units, and each impact plate unit is detachably connected with the corresponding skeleton unit.

6. The motor winding protection structure according to claim 5, wherein: each skeleton unit comprises a first connecting frame and a second connecting frame, the first connecting frame is connected with the second connecting frame through a winding connecting piece, and a winding area of an enameled wire is formed between the first connecting frame, the second connecting frame and the winding connecting piece.

7. The motor winding protection structure according to claim 6, wherein: the inner side surface of the first connecting frame, the inner side surface of the second connecting frame and the inner side surface of the impact-resistant plate unit are all arc surfaces, the arc inner diameter of the inner side surface of the impact-resistant plate unit is larger than the radius of the inner arc surface of the first connecting frame, and the arc inner diameter of the inner side surface of the impact-resistant plate unit is smaller than the radius of the inner arc surface of the second connecting frame.

8. The motor winding protection structure according to claim 6 or 7, characterized in that: the second connecting frame is arranged at the outer side of the first connecting frame, and a positioning hole is formed in the inner side surface of the first connecting frame; when in use, the stator core is fixed on the framework unit through the positioning hole.

9. The motor winding protection structure according to claim 8, wherein: each framework unit also comprises a framework baffle, and a lock hole is formed in the end face of the framework baffle; the anti-impact plate unit is fixedly provided with a locking component which is matched with the lock hole, and the anti-impact plate unit is arranged on the end face of the framework unit in a mode of connecting the locking component with the lock hole;

And when the locking assembly is arranged at the bottom of the lock hole, the column sleeve on the impact-resistant plate unit is exactly sleeved on the binding post in the framework unit.

10. The motor winding protection structure according to claim 9, wherein: the side posts and the binding posts are positioned on the inner side of the framework baffle; the lock hole on the framework baffle comprises a clamping hole and a notch, the clamping hole is formed in the end face of the framework baffle, the notch is formed in the inner side wall of the framework baffle, and the notch is communicated with the clamping hole;

The locking assembly comprises a transition bridge and a linkage rod, and the linkage rod is connected with the impact-resistant plate unit through the transition bridge; wherein, the clamping hole is in clearance fit with the linkage rod, and the depth of the clamping hole is larger than the diameter of the linkage rod; the depth of the notch is the same as that of the clamping hole, and the width of the notch is in clearance fit with the transition bridge.

11. The motor winding protection structure according to claim 10, wherein: a clamping inner hole is formed in the clamping hole along the outer side direction of the clamping hole; the clamping inner hole is in clearance fit with the linkage rod, and the length of the transition bridge is greater than twice the diameter of the linkage rod.

12. A stator, characterized in that: comprising a stator core, windings and a motor winding protection structure according to any one of claims 1-11;

The stator core is arranged in a mounting hole of a framework in the motor winding protection structure, the winding is wound on the framework in the motor winding protection structure, the impact-resistant plate in the motor winding protection structure can cover the end face of the winding, and the column sleeve on the impact-resistant plate can cover the connection point of the outgoing line in the winding and the binding post in the framework.

13. An electric motor, characterized in that: comprising a stator according to claim 12.